I did a double trip MR run to Hawaii 3 weeks ago (Fri-Sat and Sun-Mon). Was recognized by a flight attendant from the Fri outbound flight who was working the red eye Sunday night. She commented I'd had a quick trip - didn't have the heart to tell her that I'd actually been home on the Saturday and flown back to HNL again on the Sunday!
Was fun telling a nosy PAX at ORD who was giving me 50 questions about my trip when asked how long I'd ben in Hawaii. "An hour"... he thought for a minute, opened his mouth to ask question #51, but then shut up
Another fun part of the trip was spotting fellow MR'ers... one guy got off the plane in MKE and looked lost... 10 mins later he got on the MKE-ORD flight on the same metal he'd just flown up on. I was laughing to myself knowing what he was up to!